continuous sequence of frames with multiple cameras with each camera starting at start of animation?
You could use the Multi-View Render Layer functionality to simultaneously render from multiple cameras to files and then stitch them together in the compositor.
Start by creating and positioning your cameras. Ensure they all have the same name with the exception of a suitable suffix - eg, 'Camera_L' for left, 'Camera_R' for right, 'Camera_T' for top. In the Render Layers tab, enable Views and create an entry for each camera with a matching suffix for each view (ie, '_L' for left, '_R' for right, '_T' for top).

Now when you render the scene Blender will render a separate image for each camera. To view the individual images you need to disable the Stereo 3D option and select the channel using the selection box.

When rendering the animation you will now get multiple renders per frame - each will be produced with a filename including the camera suffix. For example, rendering to EXR :
0001_L.exr
0001_R.exr
0001_T.exr
0002_L.exr
0002_R.exr
0002_T.exr
0003_L.exr
0003_R.exr
0003_T.exr
0004_L.exr
0004_R.exr
0004_T.exr
....

(rendering to PNG produces similar filename output)
The separate frames can now be used in the compositor using Image nodes with suitable filename and offset, along with logic to mix between them based on the frame :

The compositor nodes have three separate images, each set with a different start frame so, in this case, the first 50 frames are using the first set of images (from one camera), after frame 50 the Mix nodes select the second set of images and after frame 100 the third set.
Note the maths nodes use the presence or not of an Alpha channel to determine which image to merge into the output to automatically select the relevant image. If the alpha channel is in use for transparency then you will need to use the frame number via a driver (enter ‘#frame’ into a Value field) or another method (eg, keyframes) to determine which image to use.
Here is the final result :

Note that Suzanne is only being rotated once through 360 degrees, but rendered from each camera and combined to show each view in turn.
Blend file included (note that there are two scenes - one for the render and a separate one for compositing (required due to the different number of frames - 50 for the render and 150 for the compositor pass)).

just a hint for newer Blender versions:
you can find in Output properties -&gt; Stereoscopy